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  • 1
    Electronic Resource
    Electronic Resource
    Up to the unsteadiness of axisymmetric thermocapillary flows in a laterally heated liquid bridge (2000)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 12 (2000), S. 103-119 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Axisymmetric flows of fluids of various Prandtl numbers, Pr, in a cylindrical and undeformable liquid bridge submitted to a lateral heating are studied in a zero gravity environment, up to their transitions to unsteadiness. The governing equations are solved numerically by a pseudospectral scheme. The results depend on Pr, in a nonmonotonic fashion, as, for instance, the threshold of the onset to unsteadiness. It has always been reached, except for our Pr=1 experiment, run up to a Marangoni number value Ma=106. The steady flows at very high Reynolds numbers (up to 107) offer a rich structure. A first incursion into unsteadiness shows different flow structure evolutions, depending on whether Pr is smaller or larger than one. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870286
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the numerical treatment of viscous singularities in wall-confined thermocapillary convection (2000)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 12 (2000), S. 2695-2697 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Confined thermocapillary flows often present a viscous singularity where free and solid surfaces meet. Any computational treatment of these flows must filter this singularity, either explicitly by modifying the boundary conditions of the problem, or implicitly by using finite precision methods. The effect of an explicit polynomial filtering is here examined for an axisymmetric side-heated liquid bridge, leading to two results: (i) thermally convective flows converge very slowly with the filtering scale; the numerical experiments must therefore be conducted carefully in order to get physically relevant results; (ii) stream-function and temperature are not suitable test variables for estimating this convergence. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1287513
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Absolute total cross-section measurements for electron scattering from silicon tetrachloride, SiCl , molecules (1999)
    Springer
    The European physical journal 6 (1999), S. 481-485 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 34.80 Electron scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The absolute total cross-sections for electron scattering on SiCl4 molecules have been measured in two distinct electron-transmission experiments, in Gdansk and in Trento laboratory, for impact energy ranging from 0.3 to 250 eV and from 75 to 4000 eV, respectively. The e--SiCl4 total cross-section function shows two very distinct resonant-like features: the strong peak at 1.9 eV and much broader main maximum centered near 10 eV with some additional substructure close to 5 eV. The present results are compared with low-energy total experimental data and elastic theoretical calculations for electron collisions with silicon tetrachloride molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050373
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    Paper (German National Licenses)
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